63645238 has 8 divisors (see below), whose sum is σ = 97499232. Its totient is φ = 31145496.

The previous prime is 63645233. The next prime is 63645259. The reversal of 63645238 is 83254636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 63645197 and 63645206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63645233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338445 + ... + 338632.

It is an arithmetic number, because the mean of its divisors is an integer number (12187404).

Almost surely, 2^63645238 is an apocalyptic number.

63645238 is a deficient number, since it is larger than the sum of its proper divisors (33853994).

63645238 is a wasteful number, since it uses less digits than its factorization.

63645238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677126.

The product of its digits is 103680, while the sum is 37.

The square root of 63645238 is about 7977.7965629615. The cubic root of 63645238 is about 399.2595426531.

The spelling of 63645238 in words is "sixty-three million, six hundred forty-five thousand, two hundred thirty-eight".